•
You have obtained the necessary hardware for the conversion. Your Lenovo Sales
Representative can help you determine what hardware you need and help you order the correct
parts.
•
If you are attempting to change the baseboard host ports of your storage array, and it currently
uses dual-protocol (also referred to as unified) SFP transceivers that you purchased from
Lenovo, you do not need to change your SFP transceivers.
•
Make sure that the dual-protocol SFP transceivers support both FC (at 8 Gbps, or 16 Gbps)
and iSCSI (at 10 Gbps), but they do not support 1 Gbps iSCSI. See
Step 1: Determine whether
you have dual-protocol SFPs to determine what type of SFP transceivers are installed. NOTE:
This is not supported for controllers without two base-board ports on the rear.
7.1.2. Considerations for changing the host protocol
The considerations for changing the host protocol depend on the starting and ending protocols of
the baseboard host ports and the HIC ports.
If you use a Mirroring feature or the Data Assurance (DA) feature, you must understand what
happens to these features when you change the host port protocol.
The following considerations apply only if you are converting a storage array that
has already been in use. These considerations do not apply if you are converting
a new storage array that does not yet have hosts and volumes defined.
Converting from FC to iSCSI (not applicable to controllers without two base-board ports
on the rear)
•
Asynchronous Mirroring requires both the local storage array and the remote storage array to
use the same protocol.
◦ If you are currently using Asynchronous Mirroring through the baseboard, you must
deactivate Asynchronous Mirroring relationships using those ports before applying the
feature pack.
◦ Refer to the online help for ThinkSystem System Manager to delete all mirror consistency
groups and remove all mirrored pairs from the local and remote storage arrays. In addition,
follow the instructions in the online help to deactivate Asynchronous Mirroring.
If your configuration contains SAN Boot hosts connected to the FC
baseboard ports, check Lenovo Storage Interoperation Center (LSIC) to
ensure that the configuration is supported on iSCSI. If it is not, you cannot
convert the host protocol to iSCSI.
•
The Synchronous Mirroring feature is not supported for iSCSI.
◦ If you are currently using Synchronous Mirroring relationships via the baseboard ports, you
must deactivate those Synchronous Mirroring relationships.
◦ Refer to the online help for ThinkSystem System Manager to remove all synchronous
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